Well i have a device which supports OpenGl ES 2.0 (HTC Desire), and of course deploy app on device much faster then on emulator. Default android emulator does not support 2.
As of Feb 2017, emulator 25.3.0 supports OpenGL 2.0 fully.
https://sites.google.com/a/android.com/tools/recent/androidemulatorrevision2530feb2017
Fully GLES 2.0 compliant. Given a host GPU that has conformant desktop OpenGL drivers, the emulator now passes 100% of CTS dEQP-GLES2 must-pass.
After it stabilizes, assuming there are no critical bugs with it, you should be able to test with it.
The emulator now supports OpenGL: http://android-developers.blogspot.com/2012/04/faster-emulator-with-better-hardware.html
Be sure to add the GPU emulation hardware property and set it to yes when creating the avd (per the link below):
http://developer.android.com/tools/devices/emulator.html
you can use the intel based emulator currently released. Just update your sdk and you can run the open gl application on the emulator too.
Update: As correctly stated by a StackOverflow user, the android emulator now supports OpenGL ES 2.0 (Feb 2017)
https://sites.google.com/a/android.com/tools/recent/androidemulatorrevision2530feb2017
As stated by Google itself, in the official Android documentation, the Android emulator does not support yet the OpenGL ES 2.0 features.
Please refer to this official document.
http://developer.android.com/resources/tutorials/opengl/opengl-es20.html
I hope this answers your question.
For OpenGles20 emulator you can use GenyMotion www.genymotion.com/